Car-truck bolster and bolster-frame.



PATENTED MAR. 24, 1903.

D Y 0 L F mm mm L 1. .3 2 7 m N GAR TRUCK BOLST-ER .ANDYBOLSTER FRAME.

APPLICATION FILED-JAN. 17, 1903.

I0 MODEL.

'Illlllllllllll r mums mas w. maumm wnnmwon, u. c.

UNITE PATENT Fr.

GEORGE G. FLOYD, OF ST. LOUIS, MISSOURI, ASSIGNOR TO AMERICAN STEELFOUNDRIES, OF ST. LOUIS, MISSOURI, A CORPORATION.

CAR -TRUCK BOLSTER AND BOLSTER-l-RAM E.

SPECIFICATION forming part of Letters Patent Nb. 723,521, dated March24, 1903.

Application filed January 17, 1903. Serial No. 139,369. (No model.)

To all whom, it may concern:

Be it known that I, GEORGE G. FLOYD, a

citizen of the United States,-residing in the ster-Frames, of which thefollowing is a full,

, clear, and exact description, reference being had to the accompanyingdrawings, forming part of this specification.

The object of my present invention is to so form the bolster andbolster-frame as to facilitate their manufacture and increase theirdurability, as well as to improve their general appearance.

My invention consists in features of novelty hereinafter fullydescribed, and pointed out in the claims.

Figure I is a top or plan view of my improved bolster and bolster-frame.Fig. II is a side view, part in sectiOn, taken on line H II, Fig. I.Fig. III is an end view. Fig. IV is a detail horizontal section taken online IV IV, Fig. II. Fig. V is a detail vertical section of thebolster-frame.

Referring to the drawings, 1 represents the arch-bars of the side framesof a truck-bolster. These arch-bars are fitted tothe ends of thebolster-frame 2, where they are held by bolts 3. The bolster-frame ismade in the form of a casting and is composed of sides 4, spring-seats5, and circular end portions 6, that connect the sides 4: together neareach end of the frame, preferably just inside of the position occupiedby the arch-bars, as shown in Fig. IV. These circular endwalls extenddown from the top of the frame a suitable distance, as shown at A, Figs.II and III, to form guides or bearings for the roundedends 6 of thebolster 7. Thebolster fits within the frame 2, resting upon springs 8,that are supported on the seats 5. The bolster is formed of castn1etal,--and,"as stated, its ends are rounded to correspond withtheconvexity of the end walls 6, the result being that the parts are easilyfitted together, as there are no sharp angles or corners, and a goodsubstantial bearing between the frame and bolster at the ends of thelatter is provided.

I claim as my invention-- 1. In a car-truck, the combination of abolster and bolster-frame, the latter having its sides joined togetherby circular end walls, and the former having its ends formed tocorrespond to the shape of said walls, substantially as set forth.

2. In a car-truck, the combination of a bolster and bolster-frame, thelatter consisting of sides having spring-seats'and circular wallsjoining the sides together at the top of

